Flow guide system and method for large plate-type screen exchange

Abstract

The invention relates to the technical field of screen exchangers, in particular to a flow guide system and method for large plate type screen exchange, and the flow guide system comprises a shell, a flow guide assembly and a filter assembly; a cavity is formed in the shell, the shell is provided with a feeding port and a discharging port, the shell is further provided with a sliding hole penetrating through the shell, a heating medium flow channel is formed in the shell and surrounds the shell, an inlet sealing ring and an outlet sealing ring are arranged in the shell and correspond to the feeding port and the discharging port respectively, a pre-tightening component is arranged on the inlet sealing ring, and a pre-tightening component is arranged on the outlet sealing ring. The two flow guide assemblies are arranged in the feeding port and the discharging port respectively, the filtering assembly is arranged on one side of the shell, and the telescopic end of the filtering assembly is in sliding sealing connection with the sliding hole, the production efficiency and the product quality are remarkably improved, and the device is particularly suitable for the treatment scene of materials sensitive to temperature, easy to degrade or needing high uniformity.

Description

Technical Field

[0001] The present invention relates to the technical field of screen changers, and more particularly, to a diversion system and method for large plate screen changing. Background Art

[0002] In modern industrial production, plate screen changers are key equipment widely used, especially playing an important role in the material processing of industries such as plastics and chemicals. However, with the continuous expansion of production scale and the increasing requirements for product quality and production efficiency, existing plate screen changers, especially large plate screen changers, gradually expose a series of problems that need to be solved urgently.

[0003] For plate screen changers in the existing market, especially large plate screen changers, there are certain limitations in their internal structure design. Due to the large size of the screen changer, the inner cavity of the flow channel increases accordingly. During the actual production process, when the material flows in the flow channel, it is easy to accumulate in the relatively large inner cavity. Coupled with the design limitations of the inlet and outlet of the screen changer, the flow of the material is not smooth enough, further exacerbating the retention of the material in the inner cavity. This situation of material retention not only affects production efficiency but also may pose a potential threat to product quality. For some special types of materials, such as polymer materials, temperature-sensitive materials that are prone to decomposition, and transparent materials, the negative impacts brought by the material retention problem are more significant. Taking polymer materials as an example, due to their long residence time in the inner cavity of the screen changer, excessive polymerization reactions may occur, resulting in changes in the properties of the materials. For temperature-sensitive materials, staying in the inner cavity of the screen changer for a long time may cause decomposition due to local overheating, affecting the stability and quality of the materials. For transparent materials, yellowing may occur during the retention process, and over time, it may even further carbonize and turn black, seriously affecting the appearance and quality of the products. During the production process, when the equipment needs to be shut down for maintenance or suspended for other reasons and then restarted, since there is a large amount of material accumulated in the inner cavity of the screen changer, these materials may have partially solidified or their properties have changed. At this time, it is very difficult to completely melt the materials and restore the normal production state, which not only prolongs the restart time of the equipment, reduces production efficiency, but also may lead to unstable product quality due to uneven melting of the materials. Summary of the Invention

[0004] In view of this, the present invention aims at the deficiencies of the prior art and provides a diversion system and method for large plate screen changing, aiming to solve at least one of the problems raised in the above background art.

[0005] In a first aspect, the present invention provides a diversion system for a large plate-type screen changer, comprising: a housing, a chamber is provided inside the housing, the housing is provided with a feed inlet and a discharge outlet, the housing is further provided with a sliding hole penetrating through the housing, a heat medium flow channel is arranged inside the housing around the housing, an inlet sealing ring and an outlet sealing ring are respectively arranged inside the housing corresponding to the feed inlet and the discharge outlet, and a pre-tightening member is arranged on the inlet sealing ring;

[0006] Diversion assemblies, there are two diversion assemblies, and the two diversion assemblies are respectively arranged inside the feed inlet and the discharge outlet, and the diversion assemblies are respectively fixedly connected to the inner walls of the feed inlet and the discharge outlet;

[0007] A filtering assembly, the filtering assembly is arranged on one side of the housing, the installation end of the filtering assembly is fixedly connected to the side wall of the housing, and the telescopic end of the filtering assembly is slidably and sealingly connected to the sliding hole.

[0008] In some embodiments, the feed inlet and the discharge outlet are symmetrically arranged, the feed inlet, the discharge outlet, the chamber and the sliding hole are communicated with each other, and the sliding hole is located between the discharge outlet and the feed inlet.

[0009] In some embodiments, there are multiple heat medium flow channels, and the multiple heat medium flow channels are communicated with each other. The multiple heat medium flow channels are arranged at intervals along the height direction of the housing, and the heat medium flow channels are used to heat the materials inside the housing.

[0010] In some embodiments, both the outlet sealing ring and the inlet sealing ring are arranged inside the chamber, and the outlet sealing ring and the inlet sealing ring are symmetrically arranged with respect to the axis of the housing. The side walls of the outlet sealing ring and the inlet sealing ring are both in contact with the inner wall of the chamber. The axial cross-sections of the outlet sealing ring and the inlet sealing ring are both annular structures. The outer diameters of the outlet sealing ring and the inlet sealing ring match the inner diameter of the chamber. The outlet sealing ring and the inlet sealing ring both include:

[0011] A first ring;

[0012] A second ring, the diameter of the second ring is smaller than the diameter of the first ring, the second ring is arranged inside the first ring, and the axis of the first ring coincides with the axis of the second ring;

[0013] The flow splitting reinforcing ribs are provided with a plurality of them, and the plurality of flow splitting reinforcing ribs are arranged in an annular array with the center of the second ring as the axis on the outer side wall of the second ring. One ends of the plurality of flow splitting reinforcing ribs are respectively fixedly connected to the outer side wall of the second ring, and the other ends of the plurality of flow splitting reinforcing ribs are respectively fixedly connected to the inner wall of the first ring.

[0014] In some embodiments, on one side of the inlet sealing ring away from the outlet sealing ring, two fixing grooves are symmetrically arranged with the center of the inlet sealing ring as the axis. The pre-tightening components are arranged inside the two fixing grooves. The pre-tightening components are pre-tightening springs. One end of the pre-tightening spring is fixedly connected to the bottom wall of the fixing groove, and the other end of the pre-tightening spring abuts against the inner wall of the chamber.

[0015] In some embodiments, the flow guiding assembly includes:

[0016] A flow guiding plate, the side wall of the flow guiding plate is fixedly connected to the inner wall of the feed port or the discharge port, and the outer diameter of the flow guiding plate matches the inner diameter of the feed port or the discharge port;

[0017] A flow guiding torpedo head, the flow guiding torpedo head is arranged inside the flow guiding plate, and the flow guiding torpedo head coincides with the axis of the flow guiding plate;

[0018] Flow splitting ribs, there are a plurality of them, and the plurality of flow splitting ribs are arranged in an annular array with the flow guiding torpedo head as the axis on the side wall of the flow guiding torpedo head. One ends of the plurality of flow splitting ribs are fixedly connected to the side wall of the flow guiding torpedo head, and the other ends of the plurality of flow splitting ribs are fixedly connected to the inner wall of the flow guiding plate. The other ends of the plurality of flow splitting ribs are all inclined towards the sliding hole.

[0019] In some embodiments, one ends of the two flow guiding assemblies close to the sliding hole respectively abut against the side walls of the inlet sealing ring and the outlet sealing ring. The inlet sealing ring and the outlet sealing ring are both located between the two flow guiding assemblies. The two flow guiding assemblies are used to further fix the inlet sealing ring and the outlet sealing ring.

[0020] In some embodiments, the filtering assembly includes:

[0021] An oil cylinder fixing plate, the oil cylinder fixing plate is arranged on the side wall of the housing, and the oil cylinder fixing plate is fixedly connected to the side wall of the housing through a pillar bolt;

[0022] An oil cylinder, the oil cylinder is arranged on the side of the oil cylinder fixing plate away from the housing, the installation end of the oil cylinder is fixedly connected to the oil cylinder fixing plate, and a connecting end plate is fixed to the telescopic end of the oil cylinder;

[0023] The slide plate, the outer diameter of the slide plate matches the inner diameter of the sliding hole, one end of the slide plate is fixedly connected to the connecting end plate, the slide plate is used to extend into the interior of the sliding hole, the slide plate is slidably and sealingly connected to the sliding hole, the side wall of the slide plate abuts and fits against the inlet sealing ring and the outlet sealing ring, a stop block is fixedly connected to the end of the slide plate away from the oil cylinder, and the outer diameter of the stop block is greater than the inner diameter of the sliding hole.

[0024] In some embodiments, a heat medium pipeline is provided inside the slide plate, the heat medium pipeline is used to heat the slide plate, two porous plates are arranged at intervals along the length direction of the slide plate, the outer diameter of the porous plate matches the inner diameter of the chamber, a filter screen is arranged on the side of the porous plate close to the feed port, the filter screen matches the porous plate, the filter screen abuts and fits against the porous plate, a wire mesh pressing member is arranged on the side of the filter screen away from the porous plate, the wire mesh pressing member is used to fix the filter screen, the wire mesh pressing member is snap-connected to the porous plate, a slide plate temperature measuring hole is arranged inside the slide plate on the side away from the oil cylinder, a connection hole is arranged on the stop block corresponding to the slide plate temperature measuring hole, and the connection hole communicates with the slide plate temperature measuring hole.

[0025] In a second aspect, the present invention provides a diversion method for a large-scale plate type screen changer, including the following steps:

[0026] S1. The material sequentially passes through the feed port, the diversion assembly, the inlet sealing ring, the filter screen, the porous plate, the outlet sealing ring, and finally flows out through the discharge port;

[0027] S2. According to the temperature inside the housing obtained in real time by the temperature sensor extending into the slide plate temperature measuring hole, control the temperature of the heat medium in the heat medium flow channel and the heat medium pipeline to be the same as the preset temperature;

[0028] S3. When one of the porous plates reaches the preset working time, push the slide plate to slide through the oil cylinder, so that the other porous plate enters the interior of the chamber and is in a working state, and at this time, replace the filter screen of the porous plate in the non-working state.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the flow dividing ribs and the flow guiding torpedo head on the flow guiding plate, the material is evenly divided and flowed to various parts of the flow channel, reducing the accumulation of the material in the chamber, especially suitable for polymer materials, temperature-sensitive materials and transparent materials, and avoiding problems such as yellowing and carbonization caused by retention. The filtering component (slide plate) can dynamically switch the working state to ensure the continuous and smooth flow of the material and avoid the difficulty in restarting caused by the solidification of the material during shutdown. The combined action of the heat medium flow channel inside the housing and the heat medium pipeline inside the slide plate uniformly heats the material in multiple dimensions, avoiding local overheating or uneven temperature, especially suitable for temperature-sensitive materials (such as transparent materials and decomposable materials). By monitoring the temperature inside the housing in real time through the temperature measuring holes on the slide plate and combining with the temperature control of the heat medium flow channel and pipeline, it is ensured that the material is always within the preset temperature range, improving the processing stability. The sealing ring adopts a double-layer circular ring structure (the first circular ring + the second circular ring) and a flow dividing and strengthening rib design, which not only enhances the strength of the sealing ring itself to prevent high-pressure deformation, but also further equalizes the material flow through the flow dividing ribs, reducing the leakage risk caused by uneven force on the sealing ring. The inlet sealing ring is equipped with a pre-tightening spring to automatically compensate for the gap between the sealing ring and the inner wall of the chamber, improving the reliability of dynamic sealing and avoiding material leakage. The oil cylinder drives the slide plate to reciprocate, realizing the alternating operation of the two perforated plates, and the filter screen can be replaced without affecting production, reducing the shutdown time and maintenance cost.

[0030] The above general description and the following detailed description are exemplary and explanatory only and do not limit the present disclosure.

[0031] Other features and aspects of the present disclosure will become clearer from the following detailed description of the exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 The front view of the flow guiding system for large-scale plate type screen changing provided by the embodiment of the present invention;

[0034] Figure 2 The top view structural sectional view of the flow guiding system for large-scale plate type screen changing provided by the embodiment of the present invention;

[0035] Figure 3 The side view structural sectional view of the flow guiding system for large-scale plate type screen changing provided by the embodiment of the present invention;

[0036] Figure 4Front view of the inlet sealing ring of the diversion system for large plate screen changing provided by the embodiment of the present invention;

[0037] Figure 5 Top view structure sectional view of the inlet sealing ring of the diversion system for large plate screen changing provided by the embodiment of the present invention;

[0038] Figure 6 Front view of the outlet sealing ring of the diversion system for large plate screen changing provided by the embodiment of the present invention;

[0039] Figure 7 Top view structure sectional view of the outlet sealing ring of the diversion system for large plate screen changing provided by the embodiment of the present invention;

[0040] Figure 8 Front view structure sectional view of the slide plate of the diversion system for large plate screen changing provided by the embodiment of the present invention;

[0041] Figure 9 Top view structure sectional view of the slide plate of the diversion system for large plate screen changing provided by the embodiment of the present invention;

[0042] Figure 10 Partial enlarged view of the slide plate of the diversion system for large plate screen changing provided by the embodiment of the present invention.

[0043] Wherein: 1. housing; 2. chamber; 3. feed inlet; 4. discharge outlet; 5. sliding hole; 6. heat medium flow channel; 7. inlet sealing ring; 8. outlet sealing ring; 9. first circular ring; 10. second circular ring; 11. shunt strengthening rib; 12. fixing groove; 13. preloading spring; 14. diversion plate; 15. diversion torpedo head; 16. shunt rib; 17. oil cylinder fixing plate; 18. oil cylinder; 19. connecting end plate; 20. slide plate; 21. stop block; 22. heat medium pipeline; 23. perforated plate; 24. filter screen; 25. screen pressing member; 26. slide plate temperature measuring hole; 27. connecting hole; 28. pillar bolt. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0046] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] Referring to Figures 1-10 as shown, the first embodiment:

[0049] A diversion system for a large plate-type screen changer, characterized by comprising:

[0050] A housing 1, inside which a chamber 2 is provided. The housing 1 is provided with a feed port 3 and a discharge port 4. The housing 1 is further provided with a sliding hole 5 penetrating through the housing 1. A heat medium flow channel 6 is arranged around the housing 1 inside the housing 1. An inlet sealing ring 7 and an outlet sealing ring 8 are respectively arranged corresponding to the feed port 3 and the discharge port 4 inside the housing 1. A pre-tightening member is arranged on the inlet sealing ring 7;

[0051] Two diversion components, which are respectively arranged inside the feed port 3 and the discharge port 4, and are fixedly connected to the inner walls of the feed port 3 and the discharge port 4 respectively;

[0052] A filtering component, which is arranged on one side of the housing 1. The installation end of the filtering component is fixedly connected to the side wall of the housing 1, and the telescopic end of the filtering component is slidably and sealingly connected to the sliding hole 5.

[0053] In some specific embodiments, the feed inlet 3 and the discharge outlet 4 are symmetrically arranged. The feed inlet 3 is in communication with the discharge outlet 4, the chamber 2, and the sliding hole 5. The sliding hole 5 is located between the discharge outlet 4 and the feed inlet 3.

[0054] In some specific embodiments, a plurality of heat medium channels 6 are provided, and the plurality of heat medium channels 6 are in communication with each other. The plurality of heat medium channels 6 are arranged at intervals along the height direction of the housing 1. The heat medium channels 6 are used to heat the material inside the housing 1.

[0055] It should be understood that the heat medium channels 6 are a plurality of channels arranged at intervals along the height direction of the housing 1. Heating or cooling media (such as steam, hot water, or hot oil, etc.) flow inside these channels, which are used to heat or cool the material inside the housing 1. When the material enters the chamber 2 through the feed inlet 3, it will be evenly distributed in the chamber under the diversion effect of the diversion component. At this time, the heating medium in the heat medium channels 6 will heat the material to make the material reach the required temperature. The heated material will continue to flow towards the discharge outlet 4 and finally flow out of the screen changer. During the whole process, the heating medium in the heat medium channels 6 continuously heats the material to ensure that the material maintains a constant temperature inside the screen changer.

[0056] Since the heat medium channels 6 are arranged at intervals along the height direction of the housing 1 and the plurality of channels are in communication with each other, it can ensure that the material is uniformly heated inside the screen changer. This helps to avoid quality problems caused by local overheating or overcooling of the material. The design of the heat medium channels 6 enables the heating medium to fully contact the material, thereby improving the heat exchange efficiency. This helps to shorten the heating time of the material and improve the production efficiency. Through reasonable channel design and the diversion effect of the diversion component, the residence time of the material inside the screen changer can be reduced. This helps to avoid problems such as decomposition and carbonization of the material due to long-term residence, thereby ensuring the quality and output of the material. The design of the heat medium channels 6 can adapt to different types and viscosities of materials. By adjusting the temperature and flow rate of the heating medium, precise heating and control of different materials can be achieved. When maintenance or filter screen replacement of the screen changer is required, the sliding of the slide plate 20 and the replacement of the perforated plate 23 can be realized through components such as the sliding hole 5 and the oil cylinder 18. This design makes the maintenance work more convenient and fast.

[0057] In some specific embodiments, the outlet seal ring 8 and the inlet seal ring 7 are both disposed inside the chamber 2, and the outlet seal ring 8 and the inlet seal ring 7 are symmetrically arranged with respect to the axis of the housing 1. The side walls of the outlet seal ring 8 and the inlet seal ring 7 are in contact with the inner wall of the chamber 2. The axial cross-sections of the outlet seal ring 8 and the inlet seal ring 7 are both annular structures. The outer diameters of the outlet seal ring 8 and the inlet seal ring 7 match the inner diameter of the chamber 2. The outlet seal ring 8 and the inlet seal ring 7 both include:

[0058] A first ring 9;

[0059] A second ring 10, the diameter of the second ring 10 being smaller than the diameter of the first ring 9. The second ring 10 is disposed inside the first ring 9, and the axes of the first ring 9 and the second ring 10 coincide;

[0060] Diversion reinforcing ribs 11. A plurality of the diversion reinforcing ribs 11 are arranged in a circular array on the outer side wall of the second ring 10 with the center of the second ring 10 as the axis. One ends of the plurality of diversion reinforcing ribs 11 are respectively fixedly connected to the outer side wall of the second ring 10, and the other ends of the plurality of diversion reinforcing ribs 11 are respectively fixedly connected to the inner wall of the first ring 9.

[0061] It should be understood that the outlet seal ring 8 and the inlet seal ring 7 are both disposed inside the chamber 2, symmetrically distributed with respect to the axis of the housing 1, and their side walls are in contact with the inner wall of the chamber 2 to form a sealing structure. The axial cross-sections of both are annular, and the outer diameters match the inner diameter of the chamber 2 to ensure the sealing effect. Each seal ring consists of the following parts: The first ring 9: As the outer layer structure of the seal ring, it is in direct contact with the inner wall of the chamber 2 and provides the main sealing function; The second ring 10: Its diameter is smaller than that of the first ring 9, is located inside the first ring 9, and coincides with the axis of the first ring 9, playing a role of support and strengthening; The diversion reinforcing ribs 11: A plurality of the diversion reinforcing ribs 11 are arranged in a circular array with the center of the second ring 10 as the axis, one end is fixed to the outer side wall of the second ring 10, and the other end is fixed to the inner wall of the first ring 9. These diversion reinforcing ribs not only enhance the structural strength of the seal ring but also play a role in diverting the material.

[0062] The side walls of the outlet sealing ring 8 and the inlet sealing ring 7 are in contact with the inner wall of the chamber 2, forming a tight sealing structure to effectively prevent material leakage. The cooperation between the first ring 9 and the inner wall of the chamber 2 ensures the reliability of the seal, avoiding material leakage to the outside or entry of external impurities. The design of the second ring 10 and the flow-dividing and strengthening ribs 11 significantly enhances the structural strength of the sealing ring, preventing deformation or damage in high-pressure or high-temperature environments. The annular array distribution of the flow-dividing and strengthening ribs 11 enables the sealing ring to withstand greater pressure and extends its service life. The flow-dividing and strengthening ribs 11 not only play a strengthening role but also divert the material, making the material flow more evenly inside the chamber 2 and avoiding local accumulation or retention. This flow-dividing design helps improve the screen-changing efficiency, reduce the residence time of the material in the chamber, and lower the risk of material decomposition or carbonization. The presence of the heat medium flow channel 6 requires the material inside the chamber 2 to maintain a certain temperature, and the design of the sealing ring can effectively adapt to high-temperature environments, preventing seal failure caused by thermal expansion or contraction. The material selection of the first ring 9 and the second ring 10 can be optimized for high-temperature environments to further improve the high-temperature resistance of the sealing ring. The sealing ring is designed as a modular structure, and the outlet sealing ring 8 and the inlet sealing ring 7 can be independently disassembled and replaced, reducing the maintenance difficulty. The fixing method of the flow-dividing and strengthening ribs 11 makes the sealing ring more stable during installation and disassembly, reducing the operation risk. The flow-dividing effect of the flow-dividing and strengthening ribs 11 not only optimizes the flow path of the material but also has a certain mixing effect, making the material mix more evenly inside the chamber 2. This design helps improve the quality of the material, especially for polymer materials or temperature-sensitive materials, and can avoid quality problems caused by uneven mixing.

[0063] In some specific embodiments, two fixing grooves 12 are symmetrically arranged on one side of the inlet sealing ring 7 away from the outlet sealing ring 8 with the center of the inlet sealing ring 7 as the axis of symmetry. The pre-tightening components are arranged inside both of the two fixing grooves 12. The pre-tightening components are pre-tightening springs 13. One end of the pre-tightening spring 13 is fixedly connected to the bottom wall of the fixing groove 12, and the other end of the pre-tightening spring 13 is in contact with the inner wall of the chamber 2.

[0064] It should be understood that on the side of the inlet sealing ring 7 away from the outlet sealing ring 8, there are two fixing grooves 12 symmetrically arranged with the center of the circle as the axis. A pre-tightening spring 13 is installed inside each fixing groove 12. One end of the pre-tightening spring 13 is fixed to the bottom wall of the fixing groove 12, and the other end abuts against the inner wall of the chamber 2. This design applies pressure to the inlet sealing ring 7 towards the inner wall of the chamber 2 through the elastic force of the pre-tightening spring 13, so as to ensure a tight sealing contact between the inlet sealing ring 7 and the inner wall of the chamber 2. The specific working process is as follows: The pre-tightening spring 13 pushes the inlet sealing ring 7 towards the slide plate 20. During the operation of the screen changer, due to temperature changes or pressure fluctuations, there may be a small relative displacement between the inner wall of the chamber 2 and the inlet sealing ring 7. The elastic force of the pre-tightening spring 13 can dynamically compensate for this displacement and always maintain a tight contact between the sealing ring and the inner wall.

[0065] In some specific embodiments, the diversion assembly includes:

[0066] A diversion plate 14, the side wall of the diversion plate 14 is fixedly connected to the inner wall of the feed inlet 3 or the discharge outlet 4, and the outer diameter of the diversion plate 14 matches the inner diameter of the feed inlet 3 or the discharge outlet 4;

[0067] A diversion torpedo head 15, the diversion torpedo head 15 is arranged inside the diversion plate 14, and the diversion torpedo head 15 coincides with the axis of the diversion plate 14;

[0068] There are a plurality of flow dividing ribs 16. The plurality of flow dividing ribs 16 are arranged in an annular array on the side wall of the diversion torpedo head 15 with the diversion torpedo head 15 as the axis. One end of the plurality of flow dividing ribs 16 is fixedly connected to the side wall of the diversion torpedo head 15, and the other end of the plurality of flow dividing ribs 16 is fixedly connected to the inner wall of the diversion plate 14. The other ends of the plurality of flow dividing ribs 16 are all inclined towards the sliding hole 5.

[0069] It should be understood that the side wall of the flow guide plate 14 is fixedly connected to the inner wall of the feed inlet 3 or the discharge outlet 4, and its outer diameter matches the inner diameter of the feed inlet 3 or the discharge outlet 4, ensuring that the material can pass smoothly when entering or leaving the chamber 2. As the basic structure of the flow guide assembly, the flow guide plate 14 plays a role in guiding the flow of the material, preventing the material from directly impacting the inner wall of the chamber or the sealing ring. The flow guide torpedo head 15 is arranged inside the flow guide plate 14 and coincides with the axis line of the flow guide plate 14 to form a streamlined flow guide core. The design of the flow guide torpedo head 15 can centrally guide the material from the feed inlet 3 or the discharge outlet 4 to the central area of the chamber 2, reducing the direct impact of the material on the inner wall of the chamber. A plurality of flow dividing ribs 16 are arranged in a circular array with the flow guide torpedo head 15 as the axis, one end being fixed to the side wall of the flow guide torpedo head 15 and the other end being fixed to the inner wall of the flow guide plate 14. The other ends of the flow dividing ribs 16 are all inclined towards the sliding hole 5. This inclined design enables the material to be evenly divided when passing through the flow guide assembly and flow towards various areas of the chamber 2 along the guidance of the flow dividing ribs 16. The flow dividing ribs 16 not only play a role in flow division but also can preliminarily knead the material to improve the uniformity of the material.

[0070] The synergistic effect of the deflector plate 14, the deflector torpedo head 15, and the dividing ribs 16 guides the material from the feed port 3 or the discharge port 4 to the central area of the chamber 2 and evenly distributes it inside the chamber, avoiding the direct impact of the material on the inner wall of the chamber or the sealing ring, and reducing the risk of material retention and accumulation. The streamlined design of the deflector torpedo head 15 further optimizes the flow path of the material, reduces the flow resistance, and improves the screen change efficiency. The annular array design and the inclined setting of the dividing ribs 16 enable the material to be evenly divided when passing through the deflector assembly, avoiding the problems of too fast or too slow local flow velocity. The kneading effect of the dividing ribs 16 makes the material mix more evenly inside the chamber 2. Especially for polymer materials or temperature-sensitive materials, it can avoid quality problems caused by uneven mixing. The deflector assembly guides the material to the central area of the chamber 2, avoiding the direct impact of the material on the inlet sealing ring 7 and the outlet sealing ring 8, reducing the wear rate of the sealing ring, and extending the service life of the sealing ring. The inclined design of the dividing ribs 16 further disperses the impact force of the material, protecting the sealing ring and the inner wall of the chamber. The structural design of the deflector assembly (such as the deflector plate 14, the deflector torpedo head 15, and the dividing ribs 16) can withstand high-temperature and high-pressure environments, ensuring normal operation under extreme working conditions. The strengthening effect of the dividing ribs 16 also improves the structural strength of the deflector assembly, preventing deformation or damage under high-pressure environments. The dividing and guiding effects of the deflector assembly make the material flow more smoothly inside the chamber 2, reducing the risk of material retention and accumulation. Especially when the machine stops and restarts, the material can be completely melted faster. This design helps to improve the screen change efficiency, reduce the downtime caused by material retention or carbonization, and improve the production efficiency. The design of the deflector assembly is a modular structure, and the deflector plate 14, the deflector torpedo head 15, and the dividing ribs 16 can be independently disassembled and replaced, reducing the maintenance difficulty. The fixing method of the dividing ribs 16 makes the deflector assembly more stable during installation and disassembly, reducing the operation risk. The design of the deflector assembly (especially the deflector torpedo head 15 and the dividing ribs 16) can conduct the heat of the heat medium flow channel 6 more evenly to the material, improving the heating efficiency of the material. The inclined design of the dividing ribs 16 also helps the material to fully contact the heat medium flow channel 6 inside the chamber 2, making the material heating more uniform.

[0071] In some specific embodiments, one end of the two deflector assemblies close to the sliding hole 5 abuts against the side walls of the inlet sealing ring 7 and the outlet sealing ring 8 respectively. The inlet sealing ring 7 and the outlet sealing ring 8 are both located between the two deflector assemblies, and the two deflector assemblies are used to further fix the inlet sealing ring 7 and the outlet sealing ring 8.

[0072] It should be understood that one end of the diversion component close to the sliding hole 5 is in direct contact with the side walls of the inlet sealing ring 7 and the outlet sealing ring 8, forming a tight fit. This abutting effect provides additional support for the sealing ring through the structural strength of the diversion component, preventing the sealing ring from displacing or deforming during operation. The two diversion components are respectively located on both sides of the inlet sealing ring 7 and the outlet sealing ring 8, forming a "clamping" structure to fix the sealing ring inside the chamber 2. The abutting force between the diversion component and the sealing ring is transmitted to the housing 1 through the sliding hole 5, further enhancing the stability of the sealing ring. The diversion component not only plays a role in fixing the sealing ring, but also works in cooperation with the sealing ring to optimize the flow path of the material.

[0073] The abutting effect between the diversion component and the sealing ring provides additional support for the sealing ring, preventing the sealing ring from displacing or deforming due to vibration, pressure or temperature changes during operation. The "clamping" structure formed by the two diversion components further fixes the sealing ring, ensuring its stable position inside the chamber 2 and improving the reliability of the seal. The tight abutment between the diversion component and the sealing ring ensures the sealing effect between the sealing ring and the inner wall of the chamber 2, avoiding the risk of material leakage. The fixing effect of the diversion component reduces the gap between the sealing ring and the inner wall, further improving the tightness of the seal. The synergistic effect between the diversion component and the sealing ring makes the flow of the material inside the chamber 2 more uniform, avoiding the problems of too fast or too slow local flow velocity. The inclined design of the flow dividing rib 16 and the cooperation with the sealing ring further optimize the flow path of the material and reduce the impact of the material on the sealing ring. The structural strength of the diversion component can withstand high-temperature and high-pressure environments, ensuring that it can still provide stable support for the sealing ring under extreme working conditions. The tight fit between the diversion component and the sealing ring prevents seal failure caused by thermal expansion or contraction. The fixing effect of the diversion component reduces the wear rate of the sealing ring and extends the service life of the sealing ring. The synergistic effect between the diversion component and the sealing ring avoids the direct impact of the material on the sealing ring and reduces the risk of damage to the sealing ring. The modular design of the diversion component makes its installation and maintenance with the sealing ring more convenient. When replacing the sealing ring, only the diversion component needs to be disassembled, without the need for large-scale disassembly of the entire chamber.

[0074] In some specific embodiments, the filtering component includes:

[0075] An oil cylinder fixing plate 17, the oil cylinder fixing plate 17 is arranged on the side wall of the housing 1, and the oil cylinder fixing plate 17 is fixedly connected to the side wall of the housing 1 through a pillar bolt 28;

[0076] An oil cylinder 18, the oil cylinder 18 is arranged on the side of the oil cylinder fixing plate 17 away from the housing 1, the installation end of the oil cylinder 18 is fixedly connected to the oil cylinder fixing plate 17, and a connecting end plate 19 is fixed to the telescopic end of the oil cylinder 18;

[0077] The skateboard 20, the outer diameter of the skateboard 20 matches the inner diameter of the sliding hole 5. One end of the skateboard 20 is fixedly connected to the connecting end plate 19. The skateboard 20 is used to extend into the inside of the sliding hole 5. The skateboard 20 is slidably and sealingly connected to the sliding hole 5. The side wall of the skateboard 20 abuts and fits against the inlet sealing ring 7 and the outlet sealing ring 8. A stop block 21 is fixedly connected to the end of the skateboard 20 away from the oil cylinder 18. The outer diameter of the stop block 21 is greater than the inner diameter of the sliding hole 5.

[0078] In some specific embodiments, a heat medium pipeline 22 is arranged inside the skateboard 20. The heat medium pipeline 22 is used to heat the skateboard 20. Two perforated plates 23 are arranged at intervals along the length direction of the skateboard 20. The outer diameter of the perforated plate 23 matches the inner diameter of the chamber 2. A filter screen 24 is arranged on the side of the perforated plate 23 close to the feed inlet 3. The filter screen 24 matches the perforated plate 23. The filter screen 24 abuts and fits against the perforated plate 23. A screen pressing member 25 is arranged on the side of the filter screen 24 away from the perforated plate 23. The screen pressing member 25 is used to fix the filter screen 24. The screen pressing member 25 is snap-connected to the perforated plate 23. A skateboard temperature measuring hole 26 is arranged inside the skateboard 20 on the side away from the oil cylinder 18. The stop block 21 is provided with a connection hole 27 corresponding to the skateboard temperature measuring hole 26. The connection hole 27 communicates with the skateboard temperature measuring hole 26.

[0079] It should be understood that the oil cylinder fixing plate 17 is fixed to the side wall of the housing 1 by the pillar bolts 28, providing a stable installation foundation for the oil cylinder 18. The oil cylinder 18 is installed on the side of the oil cylinder fixing plate 17 away from the housing 1. Its telescopic end is fixedly connected to the skateboard 20 through the connecting end plate 19. The telescopic movement of the oil cylinder 18 drives the skateboard 20 to reciprocate inside the sliding hole 5. The outer diameter of the skateboard 20 matches the inner diameter of the sliding hole 5, ensuring that a seal is formed when the skateboard 20 slides inside the sliding hole 5 to prevent material leakage. The side wall of the skateboard 20 abuts and fits against the inlet sealing ring 7 and the outlet sealing ring 8, further ensuring the sealing effect. The stop block 21 is fixed to the end of the skateboard 20 away from the oil cylinder 18, and its outer diameter is greater than the inner diameter of the sliding hole 5, which is used to limit the stroke of the skateboard 20 and prevent the skateboard 20 from completely disengaging from the sliding hole 5. The heat medium pipeline 22 is arranged inside the skateboard 20 and is used to heat the skateboard 20, ensuring that the skateboard 20 maintains a certain temperature during operation to avoid the material from solidifying or carbonizing on the surface of the skateboard 20. The heating effect of the heat medium pipeline 22 helps to improve the fluidity of the material and reduce the adhesion of the material on the surface of the skateboard 20.

[0080] Two porous plates 23 are arranged at intervals along the length direction of the slide plate 20, and the outer diameter matches the inner diameter of the chamber 2, which are used to support the filter screen 24 and guide the material flow. The filter screen 24 is arranged on the side of the porous plate 23 close to the feed port 3 and abuts against the porous plate 23, which is used to filter impurities in the material. The screen pressing member 25 is used to fix the filter screen 24 to ensure that the filter screen 24 will not be displaced or deformed during operation. The slide plate temperature measuring hole 26 is arranged inside the slide plate 20 on the side away from the oil cylinder 18, which is used to measure the temperature of the slide plate 20. The stop block 21 is provided with a connection hole 27 corresponding to the slide plate temperature measuring hole 26, and the connection hole 27 communicates with the slide plate temperature measuring hole 26, which is convenient for inserting the temperature measuring device into the slide plate temperature measuring hole 26 to monitor the temperature of the slide plate 20 in real time.

[0081] The engagement connection between the screen pressing member 25 and the porous plate 23 can be specifically carried out by means of elastic snap connection, mortise and tenon connection, rotary connection, magnetic attraction connection, bolt connection, etc.

[0082] Second embodiment: A diversion method for large-scale plate type screen changing according to an embodiment of the present application includes the following steps:

[0083] S1. The material sequentially passes through the feed port 3, the diversion assembly, the inlet sealing ring 7, the filter screen 24, the porous plate 23, the outlet sealing ring 8, and finally flows out through the discharge port 4;

[0084] S2. According to the temperature inside the housing 1 obtained in real time by the temperature sensor extending into the slide plate temperature measuring hole 26, control the temperature of the heat transfer medium in the heat transfer medium flow channel 6 and the heat transfer medium pipeline 22 to be the same as the preset temperature;

[0085] S3. When one of the porous plates 23 reaches the preset working time, push the slide plate 20 to slide through the oil cylinder 18, so that the other porous plate 23 enters the inside of the chamber 2 and is in a working state. At this time, replace the filter screen 24 of the porous plate 23 in the non-working state.

[0086] It should be understood that the material passes through the feed inlet 3, the diversion component, the inlet sealing ring 7, the filter screen 24, the perforated plate 23, the outlet sealing ring 8 in sequence, and finally flows out through the discharge outlet 4. This design ensures that the material undergoes multiple filtrations and supports during the flow process, effectively removing impurities and improving the purity of the material. The synergistic effect of the diversion component and the inlet sealing ring 7 evenly distributes the material inside the chamber 2, avoiding problems such as too fast or too slow local flow velocity and improving the filtration efficiency. The cooperation of the outlet sealing ring 8 and the perforated plate 23 further optimizes the flow path of the material, reduces the impact of the material on the filter screen 24 and the perforated plate 23, and extends the service life of the equipment. By inserting the temperature sensor into the temperature measurement hole 26 of the slide plate, the temperature inside the housing 1 can be obtained in real time to ensure precise monitoring of the temperature. According to the real-time temperature data, the temperature of the heat medium in the heat medium flow channel 6 and the heat medium pipeline 22 is controlled to be the same as the preset temperature. This design can effectively prevent the material from solidifying, carbonizing or deteriorating in high-temperature or low-temperature environments, ensuring the fluidity and filtration effect of the material. The heating effect of the heat medium pipeline 22 is particularly suitable for processing high-temperature materials, preventing the material from adhering to the surface of the slide plate 20 and maintaining the stable operation of the equipment.

[0087] When one of the perforated plates 23 reaches the preset working time, the slide plate 20 is pushed to slide by the oil cylinder 18, so that the other perforated plate 23 enters the inside of the chamber 2 and is in the working state. This design realizes automatic screen changing, eliminates the need to stop the machine to disassemble the filter screen 24, reduces the downtime, and improves the production efficiency. During the screen changing process, the perforated plate 23 in the non-working state can be used to replace the filter screen 24 alone without affecting the normal operation of the other perforated plate 23. This design makes the screen changing operation more flexible and avoids the disadvantages of the need for a complete shutdown in the traditional screen changing method.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A diversion system for a large plate-type screen changer, characterized in that, Comprising: A housing, inside which there is a chamber. The housing is provided with a feed inlet and a discharge outlet, and the housing is also provided with a sliding hole penetrating through the housing. Inside the housing, a heat medium flow channel is arranged around the housing. Inside the housing, an inlet sealing ring and an outlet sealing ring are respectively arranged corresponding to the feed inlet and the discharge outlet, and a pre-tightening component is arranged on the inlet sealing ring; Two diversion components, which are respectively arranged inside the feed inlet and the discharge outlet, and the diversion components are respectively fixedly connected to the inner walls of the feed inlet and the discharge outlet; A filtering component, which is arranged on one side of the housing. The installation end of the filtering component is fixedly connected to the side wall of the housing, and the telescopic end of the filtering component is slidably and sealingly connected to the sliding hole.

2. The diversion system for large plate screen changing according to claim 1, characterized in that, The feed inlet and the discharge outlet are symmetrically arranged, and the feed inlet, the discharge outlet, the chamber and the sliding hole are communicated with each other. The sliding hole is located between the discharge outlet and the feed inlet.

3. The diversion system for large plate screen changing according to claim 2, characterized in that, There are multiple heat medium flow channels, and the multiple heat medium flow channels are communicated with each other. The multiple heat medium flow channels are arranged at intervals along the height direction of the housing, and the heat medium flow channels are used to heat the materials inside the housing.

4. A diversion system for a large plate-type screen changer according to claim 3, characterized in that, Both the outlet sealing ring and the inlet sealing ring are arranged inside the chamber, and the outlet sealing ring and the inlet sealing ring are symmetrically arranged with the axis of the housing as the axis of symmetry. The side walls of the outlet sealing ring and the inlet sealing ring are both abutted against the inner wall of the chamber. The axial cross sections of the outlet sealing ring and the inlet sealing ring are both annular structures. The outer diameters of the outlet sealing ring and the inlet sealing ring match the inner diameter of the chamber. The outlet sealing ring and the inlet sealing ring both include: A first ring; A second ring, the diameter of the second ring is smaller than that of the first ring, the second ring is arranged inside the first ring, and the axes of the first ring and the second ring coincide; Diversion reinforcing ribs, there are multiple diversion reinforcing ribs, and the multiple diversion reinforcing ribs are arranged in a circular array on the outer side wall of the second ring with the center of the second ring as the axis. One ends of the multiple diversion reinforcing ribs are respectively fixedly connected to the outer side wall of the second ring, and the other ends of the multiple diversion reinforcing ribs are respectively fixedly connected to the inner wall of the first ring.

5. A diversion system for a large plate-type screen changer according to claim 4, characterized in that, On the side of the inlet sealing ring away from the outlet sealing ring, two fixing grooves are symmetrically arranged with the center of the inlet sealing ring as the axis of symmetry. The pre-tightening components are arranged inside both of the two fixing grooves. The pre-tightening components are pre-tightening springs. One end of the pre-tightening spring is fixedly connected to the bottom wall of the fixing groove, and the other end of the pre-tightening spring is abutted against the inner wall of the chamber.

6. A diversion system for a large plate-type screen changer according to claim 5, characterized in that, The diversion component includes: A diversion plate, the side wall of the diversion plate is fixedly connected to the inner wall of the feed inlet or the discharge outlet, and the outer diameter of the diversion plate matches the inner diameter of the feed inlet or the discharge outlet; A diversion torpedo head, which is arranged inside the diversion plate, and the diversion torpedo head coincides with the axis of the diversion plate; There are multiple flow-dividing ribs, and the multiple flow-dividing ribs are arranged in an annular array with the guiding torpedo head as the axis on the side wall of the guiding torpedo head. One ends of the multiple flow-dividing ribs are fixedly connected to the side wall of the guiding torpedo head, and the other ends of the multiple flow-dividing ribs are fixedly connected to the inner wall of the guiding plate. The other ends of the multiple flow-dividing ribs are all inclined towards the sliding hole.

7. A flow guiding system for a large plate type screen changer according to claim 6, characterized in that, One ends of the two guiding components close to the sliding hole respectively abut against the side walls of the inlet sealing ring and the outlet sealing ring. The inlet sealing ring and the outlet sealing ring are both located between the two guiding components, and the two guiding components are used to further fix the inlet sealing ring and the outlet sealing ring.

8. A diversion system for a large plate-type screen changer according to claim 7, characterized in that, The filtering component includes: An oil cylinder fixing plate, which is arranged on the side wall of the housing, and the oil cylinder fixing plate is fixedly connected to the side wall of the housing through a pillar bolt; An oil cylinder, which is arranged on the side of the oil cylinder fixing plate away from the housing. The installation end of the oil cylinder is fixedly connected to the oil cylinder fixing plate, and a connecting end plate is fixed to the telescopic end of the oil cylinder; A slide plate, the outer diameter of the slide plate matches the inner diameter of the sliding hole. One end of the slide plate is fixedly connected to the connecting end plate. The slide plate is used to extend into the interior of the sliding hole, and the slide plate is slidably and sealingly connected to the sliding hole. The side wall of the slide plate abuts and fits against the inlet sealing ring and the outlet sealing ring. A stop block is fixedly connected to the end of the slide plate away from the oil cylinder, and the outer diameter of the stop block is greater than the inner diameter of the sliding hole.

9. The diversion system for large plate screen changing according to claim 8, characterized in that, A heat medium pipeline is arranged inside the slide plate, and the heat medium pipeline is used to heat the slide plate. Two porous plates are arranged at intervals along the length direction of the slide plate. The outer diameter of the porous plate matches the inner diameter of the chamber. A filter screen is arranged on the side of the porous plate close to the feed port. The filter screen matches the porous plate, and the filter screen abuts and fits against the porous plate. A wire pressing member is arranged on the side of the filter screen away from the porous plate, and the wire pressing member is used to fix the filter screen. The wire pressing member is snap-connected to the porous plate. A slide plate temperature measuring hole is arranged inside the slide plate on the side away from the oil cylinder. The stop block is provided with a connection hole corresponding to the slide plate temperature measuring hole, and the connection hole is communicated with the slide plate temperature measuring hole.

10. A flow guiding method for a large plate type screen changer, characterized in that, Applied to a guiding system for large-scale plate-type screen changing according to any one of claims 1 to 9, it includes the following steps: S1. The material sequentially passes through the feed port, the guiding component, the inlet sealing ring, the filter screen, the porous plate, the outlet sealing ring, and finally flows out through the discharge port; S2. According to the temperature inside the housing obtained in real time by the temperature sensor extending into the slide plate temperature measuring hole, control the temperature of the heat medium in the heat medium flow channel and the heat medium pipeline to be the same as the preset temperature; S3. When one of the porous plates reaches the preset working time, push the slide plate to slide through the oil cylinder, so that the other porous plate enters the interior of the chamber and is in a working state. At this time, replace the filter screen of the porous plate in the non-working state.

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